493
CLASSIC
Breather Gear
Breather Valve
Thrust Washer Set
for 1950-78 Big Twin.
Made of steel, one of
each of the following:
110, .115, .120, .125
VT No. 12-1509
Primary Breather Tubes for Big Twin models.
VT No.
#
OEM
Years
Item
49-1743 543-36 1936-38 Tube
12-1514 A 24912-48 1948-57
Tube
12-1448 A 29411-36 1936-47
Tube
12-0997 A&B
1936-47
Kit
12-1528 B 24918-64 1936-57
Snoot
12-9908* C Kit
1958-64
All
12-1513 D 24918-58
1958-64
Rubber Nipple
12-9775
Breather Spacer & Washer Set
12-9753
24922-58
Breather Collar
40-0547 E 24912-65
1965-66
Tube with Nut
40-0548 F
24913-67
1967
Tube with Nut
12-1191
24914-58
1958-64
Stud Only
*Note: Includes 24925-58 spacer, 24914-58 stud, (24922-58
collar, 24923-58 cap Note: cap and collar have been pressed
together) and 24918-58 rubber ripple.
12-1531
A-Big Twin Steel Breather Valve is a machined breather
valve and gear. Designed to replace the stock steel or plastic
units. Order 8-piece thrust washers separately. Available in
stock duration only with either standard or +.030 oversize out-
side dimension.
VT No.
Year
Size
Brand
12-0788 1936-47 Standard
Sifton
12-0786 1936-47 +.030
Sifton
12-9967 1936-47 Standard
S & S
12-9968 1936-47 +.030
S & S
12-9907* 1948-77 Standard
S & S
12-1536** 1948-77 Standard
Sifton
12-1561* 1948-77 Standard
Sifton
12-9956* 1948-77 +.030
S & S
12-9906* 1978-99 Standard
S & S
12-1537* 1978-99 Standard
Sifton
12-9957* 1978-99 +.030
S & S
12-9909 All
Washer Set
S & S
12-1510 All
Washer Set
Sifton
*Note: Requires use of late style thrust washer 12-1510 or
12-9909.
**Note: Includes thrust washer set 12-1510
12-9967
12-9907
C 12-1509
Stock Plastic Breather Valves.
VT No. OEM
Year
12-1531 25310-82A L1977-99
12-1953 As Above .005 Oversize
C-Breather Valve Thrust Washer
Set for 1950-99 Big Twin includes
one of each size noted.
VT No. Fits
Set
12-1510 1979-82
8 Steel
.110, .115, .120, .125
.130, .135, .140, .145
12-1530 1982-99
8 Plastic
.130, .135, .140, .145
.150, .155, .160, .165
12-1510
Big Twin Pinion Part Kit is complete with proper parts.
VT No.
Fits
Kit
12-0101
1936-53
Five Piece Kit
12-0102
1955-69
Four Piece Kit
12-0103
1937-53 WL
Two Piece Kit
Pinion Shaft Seal Ring is used on all 1940-53 Over Head
Valve Big Twins, sold each. Replaces 24697-40.
VT No. 12-1525
12-0101
12-0102
12-9908
Breather Screens and Separator fits 1936-69 Big
Twin, sold in packs of 5.
VT No.
OEM
Item
12-1517 25275-36 Screen
12-1518 25279-36 Separator
Breather Parts
VT No. OEM
Size
Use/Fits
12-0172 8854
³⁄₁₆”
1948-52 Hydraulic Unit
12-0161 8856
⁷⁄₃₂
”
Clutch Hub,1941-54 All
12-0164 8858
¹⁄₄
”
Oil Filler, 1948-64
12-0158 8866
³⁄₈”
Check valve,1941-up FL-
FLH,Classic, 1971-up all FX,
1954-up
all
XL
12-0129
³⁄₈”
Nylon Ball Bearings
12-0156 8872
¹⁄₂
”
Shifter Cam Plunger
1941-76
with
Handshift
12-0157 8860
⁵⁄₁₆
”
Clutch Ramp Assembly
Steering
Head
1971-83 All XL, 1954-78 All XL
12-0157
12-0172
12-0164
Sifton Air Ramp fits S&S/
Sifton Breather Gear on 1936-
99 models to remove more
air and oil from crankcase.
Requires removal of screen for
installation. Gear not included.
VT No. 12-1945
12-1945
12-1945
Installed
Cap and Collar
have been
pressed together
Oil Pump Drive Gear Set fits 1973-84
FL-FX.
VT No. 12-1546
12-1496
Sifton High Flow Pinion Shaft Oil Pump Drive Gear for
1939-53 OHV Big Twins. 6 Tooth gear increases oil flow rate
by approximately 25%. Requires use of late style (OEM#
26345-73 VT No. 12-1407) oil pump drive shaft gear. Also
available as a kit that includes correct drive shaft gear.
VT No. Item
12-1496 Pinion Shaft Gear only
12-1505 Kit
12-1517
12-1518
Ball Bearings
12-0129
12-1496
12-1537
12-0788